Definition: You are given a math word problem and you are supposed to make use of mathematical concepts like probability, combinatorics, linear equations, sequences/series, or simple operators like addition, subtraction, division, or multiplication to answer the given question. Choose the best option from the 5 given options and report that option.
Input: Question: The average runs scored by a batsman in 30 matches is 50. In the next 15 matches the batsman scored an average of 26 runs. Find his average in all the 45 matches?

 Option A: 31

 Option B: 42

 Option C: 29

 Option D: 97

 Option E: 27

Option B